{"product_id":"westinghouse-hfd1045l-circuit-breaker","title":"Westinghouse | HFD1045L | Circuit Breaker | 45A | 1-Pole | 277V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Westinghouse HFD1045L circuit breaker — a purpose-built, reliable solution for protecting single-pole circuits in 277-volt systems. With a 45-amp rating, this 1-pole device is designed for maintenance, retrofit, and replacement applications where exact compatibility matters, ensuring your electrical panel continues to run safely and efficiently.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 45A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 277V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e HFD1045L\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy choose the Westinghouse HFD1045L?\u003c\/strong\u003e This breaker is engineered to reliably interrupt fault currents in 277V circuits, helping protect wiring, reduce the risk of fire, and minimize downtime due to electrical faults. Its single-pole design makes it ideal for dedicated lighting runs and individual branch circuits common in commercial spaces, while its 45A rating accommodates higher-demand loads without compromising safety.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance:\u003c\/strong\u003e Replace aging or worn breakers to restore protective performance without rewiring.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRetrofit:\u003c\/strong\u003e Update electrical systems to safely manage upgraded 277V loads in existing panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReplacement:\u003c\/strong\u003e Swap in a like-for-like breaker to maintain original circuit protection specifications after component wear.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical installation and compatibility tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eBefore ordering, \u003cstrong\u003econfirm fit and ratings\u003c\/strong\u003e for your panel. The part number HFD1045L is the most reliable reference for compatibility.\u003c\/li\u003e \u003cli\u003eEnsure your panel supports a 1-Pole 277V, 45A breaker in the Westinghouse-compatible form factor.\u003c\/li\u003e \u003cli\u003eInstallations should be performed by a qualified electrician in accordance with local codes and panel manufacturer guidelines.\u003c\/li\u003e \u003cli\u003eKeep a spare HFD1045L on hand for proactive maintenance, enabling quick, safe replacements and minimizing downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for longevity and dependable performance, the Westinghouse HFD1045L 45A 1-Pole 277V circuit breaker is your go-to solution for protecting critical circuits in commercial environments. Whether you’re safeguarding lighting runs, feeders, or dedicated branch circuits, this breaker delivers reliable overcurrent protection with straightforward installation and lasting value.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Westinghouse","offers":[{"title":"Default Title","offer_id":46424723259554,"sku":"HFD1045L","price":269.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/westinghouse-hfd1045l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}